Scaffold support



Sept. 20, 1932.

J. R. ADAMS 1,878,802. 4

SCAFFOLD SUPPORT Filed March 13, 1931 3 Sheets-Sheet 1 Sept. 20, 1- 32 1,878,802

SGAFFOLD SUPPORT Filed March 15, 1931 3 Sheets-Sheet 2 In veninr A llomey Sept. 20, 1932. R ADAMS 1,878,802

SCAFFOLD SUPPORT Filed March 13, 1951 s Sheets-Sheet a.

Patented Sept. 20, 1932 JAMES B. AnAivrs, or ATLANTA, GEoRo-La SGAFFQLD surron'r Applicationfiled Ma nie, 1931. Serial no. 522,362;

This invention relates to a scaffold support and has for one of its important objects to provide, in'a manneras hereinafter set forth, a scaffold support which is particularly for '5 use by brick layers on the outside of a building wall which is under cnstruction, the-device embodying hoisting means for raising or lowering the scafi'old asdesired, said hoisting means being arranged in a novel manner so as" to be out of the way of the'mechanics who are constructing the walls.

Other objects of the inventionare to provide a scaffold support of the character described which will be simple in construction,

is 1 strong, durable, compact, efficient and reliable in use and which may be manufactured at low cost.

"All of the foregoing and still further objects and advantages of the invention will bespecification, taken in connection withthe accompanying drawings wherein like charac-' ters of reference designate corresponding parts throughout the several views, and "wherein': I a

Figure 1 is a view in rear elevation showing a pair of scaffold supports constructed in accordance with this invention mounted in operative position with the boards or platforms mounted thereon.

Figure 2 is a view inside elevation of the scaffold support. v

FigureB is a view in top plan thereof. Figure 4 is a view in vertical section taken e5 substantially on the line H of Figure 3.-

Figure 5 is a view invertical cross section taken substantially on the line 5-5 of Figure 4. j Figure 6 is a detail view on an enlarged scale through the hoisting mechanism and taken substantially onthe line 66 of Fig-, ure 2. 7

tion showing the means for adj ustably mount- 'ing the wall engaging roller on the frame of the scaffold support.

Figure 8 is a detail view showing the gear plane to the front vertical member 2, sald which drives the drums. I vFigureQis a view in top plan showing the --adjacent end portions of apair of platforms 1 come apparent from a study of the following t Figure 7 is a detail viewprincipally in sec which are connected together and disposed for rest on the supports.

the front member 2 being connected to the 5 7 horizontal member 3 adjacent the bight portion of said member 3. r t

The free end'portions of the legs of the horizontal member 3 are rigidly connected to} intermediate portions of the legs of a sub- 6 stantially inverted U-shaped member 4. A The frame 1 of the scaffold support further includes an upper substantially- U-shaped horizontal member 5 which is reversely disposed with respect to the lower horizontal member 3 and which has the free end portions of its legs rigidly connected to the sides of the substantially inverted U-shaped ver tical member 4 adjacent the top or bight portion of said member a; A pair'of braces or 1 struts 6 are disposed at an inclination and have their lower end portions rigidly secured in any suitable manner to the lower end portion of the member 2 on theopposite sides thereof and said braces or struts have 5 their upper end portions rigidly secured in cured in any'suitable manner to the free end portions of the legs of the lower horizontalmember 3 and to intermed ate portions of the legs of the substantially inverted U-.

shaped verticalimember 4. i A

A forked bracket 7 is provided with rows of openings (see Figure 7) in a horizontal bracket being connected to the bight or lower end portion of the member 2. The openings P Tsar; esrrca thereon the grooved pulleys'13 and 141, re

spectively. F

Vertically spaced upper and lower shafts 15 and 16, respectively, extend between the legs or side portions of the member 4 of the frame 1 and have journaled for rotation thereon the drums 17 'and--18, respectively.

. One of the heads or end'flanges on each of the drums 17 and 18is peripherally toothed in a" manner to provide the gears 19 while the other heads or endrfianges of the drums are provided with the ratchet teeth 21 for en gagement by the dogs 21' which arepivotally mounted on one of the legs orside portions i of the member 4 of the frame 1 for releasably locking/the drums against rotation in one direction. 1 j Y J 'A ratchet wheel 22 is provided with a -hub portion 23 one end portion of which is jours .naled for rotation in the leg or side portionof the member 4 of the frame 1 which is adjacentthe gears 19, suitable means such as av retaining collar 24 being secured on the inner end of said hub 23 for retaining the ratchet" wheel22 in position/.1 1 shaft 25 is splin-ed in the hub 23 of the ratchet wheel 22 andsaid shaft is disposed between the drums '17 and 18; One end portion of the shaft. is rotatably and slidably supported in the leg or s de of the members: of the framel upon which the dogs 21 are mounted. Heads 26'are fixed .on the ends of the shaft 25 for limiting the sliding movement of said shaft inopposite directions. A gear 27 is fixed on an intermediate portion of the shaft 25 between the legs or r side portions of the member" a of the frame 1 and said gear is adapted to be engaged with ,thegears 19 of the upper and lowerdrums 17 and 18in a manner to connect said drums V to'theshaft 25 for actuation thereby. -The drums 17 and 18 will,-of.course, be rotated Y inthe same direction by the gear 27 y A lever 28 is mounted for oscillation on the outer portion ofthe hub 23 of the ratchet wheel 22 and said lever has pivotally mounted thereon a pan-129 which is engageahle with the ratchet wheel 22 in amanner to opsaid lever. v

:eratively connect said, ratchet wheel tothe lever "for actuation intone direction by As best seen in Figures 9 and 10 of the drawings, the-platforms which are desig-.' nated by, the-reference numeral 30 comprise a r plurality of boards 31 which are connected together at their ends by the transverse cleats 32. Suitable coupling devices 33 tie orc'lconnect the platforms 30 together at their en s. 7

Cables 34 and 35 pass under the pulleys 13 and 14:, respectively, and are reversely wound onthe drums17 and 18, as clearly seenin Figure f the drawings.

In use, the dogs 21. normally retain the drums 17 and 18 against rotation in a direction. tovpermit the cables 3 1 and 35 to unwind therefrom. When it is desired to raise the gscaftiold the lever 28. is oscillated in a manner to "rotate theshaft 25 through the medium of the ratchet Wheel 22 and the pawl 29, itbeing understood, of course, that the gear .27 is in mesh withuthe gears19 of the drums. It :w-illthus beseen that the drums 17 and 18 will be, simultaneously actuated inathelsame' direction. When it is desired to lowerthe-sca-ffold, thev dogs 21 are, of

course, kicked or. lifted out of engagement 7 withthe'ratchet teeth21- ofgthe drums 1'7 and 18 -to permit rotation of said drums in a direction to unwind the cables 34 35 therefrom; I r H v When it is desired to unwind the cables one at a time. instead of simultaneously,.

thereby rendering it necessary to retain one ofthe drums'aga'inst rotation'while the oth-' er of said drums is released, the shaft 25 is shifted longitudinally to the position indicated in broken lines'in Figure 6' of the draw 10o gears 19 of" the. drums, thusjdisconnecting i said: drums from each other. Then, as will ings for disengaging the-.gear 27 from the bes obvious, the dog 21' is disengagedfrom thedrum which-is desired tobe released and" the cable is unwound therefrom. The necessity for unwinding the cables 34 and 35 one at .a time arises when the supporting beams from (which said cables are suspended are tobe moved upwardly as the erection ofthe building or other structure progresses:

As may be apparent," the, mechanics Work on the platform or boards which aredisposed on the lower horizontal members 3 of the frame 1 andthematerialis placed on the platform or boards whicharesupported on the upperv horizontal member 50f the frame.

The mounting ofthewinding mechanism on V the rear vertical member 1 of the frame 1 disposes said mechanlsm 1n a position .where the same will not be inthe way of the mechanics Working on the .wall which is dis posed in front of the scaffold. This consti-f tutes a most important and desirable feature ofthe invention-1t will further beapparent that the winding mechanism is mounted for operation on an intermediate portion of" the supporting frame 1 and 7 this is another *important feature of the invention.

It is believed that the'many advantages of a scaffold supportconstructed in accord ance with the present inventionwill be read ily understood, and although the preferred embodiment of the invention is as illustrated and described, it is to be understood that changes in the details of construction and in the arrangement of parts may be resorted to without departing from the spirit of the invention or from the scope of the appended claims. a

What is claimed is 1-- 1. A scaffold support of the character de scribed comprising a frame including upper and lower substantially horizontal portions for supporting material and workmens platforms, respectively, drums mounted for rotation on an intermediate portion of the frame, pulleys mounted for rotation adjacent the ends of the frame, supporting cables trained under the pulleys and connected to the drums for winding on said drums, and

' one direction upon oscillation of the lever.

horizontal member at intermediate points,

an upper substantially U-shaped horizontal member having the free end portions of its legs rigidly connected to the legs of the substantially inverted U-shaped vertical member adjacent the bight portion thereof, the upper and lower horizontal members being adapted to support material and workmens platforms, respectively, a pair of inclined bars having their end portions rigidly secured to the bight portions of the first named vertical member and to the second named horizontal member of the frame, said bars having their intermediate portions rigidly se cured to the free end portions of the legs of the'first named horizontal member and to intermediate portions of the'legs of the second named vertical member.

3. scaffold support of the character described comprising a frame including a vertically disposed, substantially U-shaped" member, a substantially U-shaped lower hori-i zontal member connected to the free end portions'of the legs of the substantially U-shaped vertical member, the legs of this substantially U-shaped vertical member being connectedto the legs of the lower horizontal member adjac-ent the bight portion -thereof,a substanstantially inverted U-shaped vertical'member adjacent the-bight portion thereof, the upper andlower horizontal membersbeing adapted to support material and workmens platforms,

respectively, a pair of inclined bars having their end portions frigidly secured to the bight portions of thefi'rstnamed vertical member and to the second named horizontal member of: the frame, said bars having their intermediate portions rigidly secured to'the free end portions of the legs of'the first named horizontal member andto intermediate portions of the legs of the second vertical member, and means for raising or lowering the frame, said means comprising vertically spaced drums-mounted for rotation in the second named vertical member, means for simultaneously"actuating the drums, and

cables forsupporting the frame in suspended position connected to thedrums for winding thereon. Y v i I at. A scaffold supportofthe'character'described comprising a frame includinga vertically disposed, substantially U-shaped member, a substantially U-shaped lower horizontal member connected to the free end portions of the legs of the substantially U-shaped vertical member, the legs of this substantially U- shaped vertical member being connected to the legs of-the lower horizontal member adjacent the bight portion thereof, a substantially inverted U-shaped vertical member having its legs rigidly connected to the free end portions of the legs of the lower horizontal member at intermediate points,,an upper substantially U-shaped horizontal member having the free end portions of its legs rigidly connected to the legs of the substanti ally inverted lJ-shaped vertical member adjacent the bight portion thereof, the upper and lower horizontal members being adapted v to support material and workmens platforms, respectively, a pair of inclined bars having their end portions-rigidly secured to the bight portions of the first named vertical member and to the second named horizontal member of the f frame, said bars having their intermediate portions rigidly secured to the free end portions of the legs of the first named horizontal member and to. intermediate porthe frame, said means comprising vertically, V

tions of the legs ofthe second named vertical member, andmeansfor raisingor lowering spaced drums mounted forrotationin the second named: vertical member, means for simultaneously actuating the drums, and cables for supporting the frame in suspended position connected to the drums for winding thereon, the firstnamed meansfurther including horizontal rods extending between the inclined bars of the frame adjacent the upper and lower ends thereof, and peripherally grooved" pulleys rotatably and Vslidably mounted on the rods, .the cables being trained" under said pulleys. 1 r

v 5.. A scafiold support of the character described comprising an upper horizontal memher, a vertical member rigidlyj connected to one end porti on of the upper horizontal memher and depending therefrom, a lower hori- V- I zontal member rigidly'connected to the Vertical member and extending laterally there-.

from, saidupper and lower horizontal mem- V bers-beingadapted to support material and workmens platforms, respectively, another vertical member rigidly-connected to one end portion of the lower horizontal member and suspending therefrom-in spaced relation from the first named vertical member, inclined bars having their end portions rigidly connected to one end portion of the upper horizontal member andto one end portion of the second named vertical: member, intermediate portions of the inclined bars being rigidlyconnected to the lower horizontal member and v the first named vertical member. r

w In testimony whereof I affix my signature. JAMES R. ADAMS V 

